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On 16-09-05 12:29 PM, Soni L. wrote:
> Lua has 4 forms of negation:
> 
> -
> ~
> not
> ~=
> 
> Yet only 2 of them can be overloaded.
> 
> It's cool that Lua has 4 forms of negation tho.

As I understand "-" is for general numbers, "~" for integer numbers,
"not" for general logic and "~=" for equivalence logic. From them only
"~=" may be dropped and reformulated as "not ==".

Also you may count table.insert(), t[#t + 1], "+" and ".." as addition.